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3 years ago

Which element has chemical properties that are most similar to the chemical properties of sodium?

Chemistry

1 answer:

notka56 [123]3 years ago

7 0

Answer:

Lithium

Explanation:

So, the elements with similar properties to sodium (Na) are all of those elements in the same Group. The ones "most" similar would be the ones closest in mass as well. Those would be Lithium (Li) and Potassium (K)

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Match the vocabulary terms to their definitions.

vesna_86 [32]

Answer:

1. The standard metric unit of length is a meter.

2. A proposed explanation for a scientific problem is a hypothesis.

3. The standard unit of volume is a liter.

4. The curved top surface of a liquid column is the meniscus.

5. A quantity in an experiment that remains unchanges or constant is a controlled variable (control)

6. The amount of matter in an object is mass.

7 0

3 years ago

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an oxygen tank used for scuba diving has. avolume of 12.0 L .If the pressure of the tank is known to be 204.047 atm and the temp

Lapatulllka [165]

Answer: 101 moles of oxygen are contained in the tank

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 204.047 atm

V = Volume of gas = 12.0 L

n = number of moles = ?

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $22.0^0C=(22.0+273)K=295K$

$n=\frac{PV}{RT}$

$n=\frac{204.047atm\times 12.0L}{0.0821 L atm/K mol\times 295K}=101moles$

Thus 101 moles of oxygen are contained in the tank

5 0

3 years ago

What is true of intercellular signals that do not go through direct connections between cells, such as plasmodesmata?

Ronch [10]

I believe that what happens here is that when those cells carrying those intercellular signals do no pass through the connections, actually the signal is passed through or are transferred to adjacent cells for signal transmission, hence the answer is:

6 0

3 years ago

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What does the simplified model of the hall effect give for the density of free electrons in the unknown metal?

evablogger [386]

The simplified model of the hall effect proved that the current (electric) in metals are carried by electrons and not protons. The hall effect introduced the hall coefficient which is the ratio of the induced electric field to the current density x applied magnetic field. This coefficient is unique for each type of metal.

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3 years ago

How many sigma and pi bonds does it contain ch3chchco2h?

ira [324]

Answer:
But-2-enoic acid has 11 Sigma Bonds and 2 Pi Bonds.

Explanation:
The sigma bonds which are formed due to head to head overlap of partally filled orbitals are shown in red color, while Pi bonds which are formed after the formation of sigma bond by overlap of orbitals perpendicular to the sigma bond are shown in blue color.

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3 years ago